Math Dump /sym/7fd97a
id=1 · host=jp.commstar.world · 2026-10-21 00:06Z
\lim_{r\to 0} \frac{\sin r}{r} = 1
∑_{k=1}^{n} k = n(n+1)/2
352K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
192K
iħ ∂ψ/∂t = Ĥψ
det| 1 1 ; 5 2 | = -3
143K
\oint_C \vec{F}\cdot d\vec{r} = 0
375K
det| 10 7 ; 5 11 | = 75
\binom{n}{k} = \frac{n!}{k!(n-k)!}
434K
∑_{k=1}^{n} k = n(n+1)/2
∑_{k=1}^{n} k = n(n+1)/2
63K
det| 7 4 ; 4 8 | = 40
361K
CaCO₃ → CaO + CO₂
CH₄ + 2O₂ → CO₂ + 2H₂O
176K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
\frac{2}{2} \sum_{i=1}^{n} i^{2}
296K